1 files changed, 53 insertions, 0 deletions
diff --git a/library/std/src/num.rs b/library/std/src/num.rs
new file mode 100644
index 000000000..46064bd28
--- /dev/null
+++ b/library/std/src/num.rs
@@ -0,0 +1,53 @@
+//! Additional functionality for numerics.
+//!
+//! This module provides some extra types that are useful when doing numerical
+//! work. See the individual documentation for each piece for more information.
+
+#![stable(feature = "rust1", since = "1.0.0")]
+#![allow(missing_docs)]
+
+#[cfg(test)]
+mod tests;
+
+#[cfg(test)]
+mod benches;
+
+#[unstable(feature = "saturating_int_impl", issue = "87920")]
+pub use core::num::Saturating;
+#[stable(feature = "rust1", since = "1.0.0")]
+pub use core::num::Wrapping;
+#[stable(feature = "rust1", since = "1.0.0")]
+pub use core::num::{FpCategory, ParseFloatError, ParseIntError, TryFromIntError};
+
+#[stable(feature = "signed_nonzero", since = "1.34.0")]
+pub use core::num::{NonZeroI128, NonZeroI16, NonZeroI32, NonZeroI64, NonZeroI8, NonZeroIsize};
+#[stable(feature = "nonzero", since = "1.28.0")]
+pub use core::num::{NonZeroU128, NonZeroU16, NonZeroU32, NonZeroU64, NonZeroU8, NonZeroUsize};
+
+#[stable(feature = "int_error_matching", since = "1.55.0")]
+pub use core::num::IntErrorKind;
+
+#[cfg(test)]
+use crate::fmt;
+#[cfg(test)]
+use crate::ops::{Add, Div, Mul, Rem, Sub};
+
+/// Helper function for testing numeric operations
+#[cfg(test)]
+pub fn test_num<T>(ten: T, two: T)
+where
+    T: PartialEq
+        + Add<Output = T>
+        + Sub<Output = T>
+        + Mul<Output = T>
+        + Div<Output = T>
+        + Rem<Output = T>
+        + fmt::Debug
+        + Copy,
+{
+    assert_eq!(ten.add(two), ten + two);
+    assert_eq!(ten.sub(two), ten - two);
+    assert_eq!(ten.mul(two), ten * two);
+    assert_eq!(ten.div(two), ten / two);
+    assert_eq!(ten.rem(two), ten % two);
+}